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(11) | EP 0 740 387 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Interconnection system for transmitting power between electrical systems |
| (57) An electrical interconnection system (100) comprises a variable frequency rotary
transformer (102) and a control system (104). The control system (104) adjusts an
angular position of the rotary transformer (102) so that measured power (P1) transferred from a first electrical system (22) to a second electrical system (24)
matches an inputted order power (Po). The rotary transformer (102) comprises a rotor assembly (110) and a stator (112),
with the control system (104) adjusting a time integral of rotor speed over time.
The control system (104) includes a first control unit (107) and a second control
unit (108). The first control unit (107) compares the input order power Po to the measured power P1 to generate a requested angular velocity signal ωo. The second control unit (108) compares the requested angular velocity signal ωo to a measured angular velocity signal ωr of the rotary transformer to generate a converter drive signal To to a torque control unit (106), thereby controlling the angular positioning (θr) of the rotor assembly (110) relative to the stator (112). In various embodiments,
the torque control unit (106) is integrated in the rotor assembly (110) and stator
(112) of the rotary transformer (102). |